AF on vs AE-L AF-L

Expertneo

New member
Hello!

I have a question about the difference between AF-on and AE-L/AF-L buttons.. AE-L/AF-L can be set as AF-on, but people says that it is not exactly the same.

Nikon d610 lacks the AF-on button but I dont feel the disadvantage cause it can be set as AF-on as well. Could somebody explain why it isn't identical? :eagerness:

Best regards,

Bence
 

gusflores

Senior Member
Af-On button- used to initiate Autofocus when you would rather Not use the Shutter Release button to take picture.

AE-AF -- Used to LOCK autoexposure and /or Autofocus when it is held in. Example- Half Press Shutter then Press AE/AF, Move camera any direction then Press Shutter Down to take picture.
 

Expertneo

New member
Ahhhh I got it. So I can simply press af-on to get focus, but the AE-AF LOCK can be used when the shutter is half pressed.
As my understanding having the AF-on is a great feature for moving subject photography and when fast work is compulsory. Although half pressing the shutter and then using the AE-AF lock (which is set to lock AF) can "mimic" the function of AF-on.

Correct me if I am wrong, please!
 

PeteB

New member
There is an additional way to use the AF-ON button.

The normal operating mode of the shutter release button is that pressing it half way turns on the meter and activates auto-focus. Once focused, if using AF-S focusing, the focus is locked so long as you keep the shutter release button pressed half way.

Custom setting A4 (user manual page 283) can change this so the shutter release does NOT activate AF. In this case only AF-ON does so. This separates the AF and shutter release operations into two buttons. The buttons are located so they may easily be used this way. According to a Nikon rep I once spoke with, some people prefer this separation. I tried it for a while and ultimately decided I prefer the default mode. But that's just my personal preference.
 

Bill16

Senior Member
Hey thanks for the tip! I may try that sometime just to check it out and see if I like the focusing that way! :D

There is an additional way to use the AF-ON button.

The normal operating mode of the shutter release button is that pressing it half way turns on the meter and activates auto-focus. Once focused, if using AF-S focusing, the focus is locked so long as you keep the shutter release button pressed half way.

Custom setting A4 (user manual page 283) can change this so the shutter release does NOT activate AF. In this case only AF-ON does so. This separates the AF and shutter release operations into two buttons. The buttons are located so they may easily be used this way. According to a Nikon rep I once spoke with, some people prefer this separation. I tried it for a while and ultimately decided I prefer the default mode. But that's just my personal preference.
 
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